Lamp-pipe



(No Model.)

A. T. LOYD.

LAMP PIPE.

IUNI-TED STATES PATENT OFFICE.

ALEXANDER T. LOYD, OF CHICAGO, ILLINOIS.

SPECIFICATIONVformng part of Letters Patent No. 478,700, dated J' uly 12, 1892.

Application filed February 19, 1891. YSerial No. 382,026. (No model.)

others, to secure by the greater draft so pro-V vided a more perfect combustion of the oil,

v gas, or other material used for illuminating purposes and to convey to the outer air the odor, heat, and deleterious products of combustion.

I preferably form the portion of the pipe adjacent to the lamp or gas burner telescopic, so that it may be readily raised, so that the lamp may be conveniently placed in position. I may sometimes provide this end of the pipe with a conical extension or attachment and line the same with asbestus, so as to form a tight joint with the chimney.

Other objects and advantages of the invention Will hereinafter appear, and the novel features thereof will be specically defined by the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters 0f reference marked thereon, form a part of this specification, and in which- Figure 1 is a sectional view of a portion of a building, showing in side elevation several ways of carrying out my invention. Fig. 2 is an enlarged longitudinal section through a portion of a telescopic pipe. Fig. 3 is a sectional detail of a pipe With conical end or attachment with asbestus or analogous packing.

Like letters of reference indicate like parts throughout the several views in which they occur.

Referring now to the details of the drawings by letter, A designates a pipe, which may be iiexible, rigid, or semi-rigid, formed of any suitable material in one piece or in sections, telescopic or not, according to the circumstances under which it is employed. In Fig. 2 it is shown as telescopic. It may or may not be provided with a damper. In Fig. 2 it is shown as provided With a damper B, by which the draft may be regulated and the lamp made to burn more or less brightly, as

may be required. The end of the pipe which is designed to be placed over the chimney or burner is preferably, thoughnot necessarily, provided with a conical portion or extension a, asV seen in Figs. 2 and 3, and this conical portion may sometimes be lined with asbestus, mineral Wool, or other analogous material b, as seen in said Figs. 2 and 3, for the purpose of making a tight joint, so that the iiame from the lamp'or burner will not burn out the end of the tube or pipe.

In practice the pipe may be used in various Ways. Some of them are illustrated in Fig. 1. In this figureI have shown a exible pipe C connected or communicating with the chimney or flue D, which pipe may be of any desired length,` so as to permit the lamp being carried about the room, if desired.

At E, I have shown a rigid pipe extending rip through the loor F, and this pipe may be continued as far as desired, either through the roof of the building or into the chimney or out through the side of the building into the open air. In dotted lines I have shown how this pipe may be arranged between the ioors and into the flue.

At G, I have the pipe leading into the stovepipe H of a stove, and in dotted lines J, I have shown hoW a pipe may be thus conducted from a gas-burner into the said stovepipe, or it may be led into the iue direct.

The point of jointure between the lamppipe and the lamp chimney or burner or globe may be made air-tight, or the end of the lamp-pipe may be arranged just above the top of the chimney, globe, or burner or loosely surrounding the same. It is preferable, however, to have the tight joint with the chimney, globe, or burner. The pipe itself may be formed in Whole or in part of some noncombustible material. (Shown at c in Fig. 3.)

The lamp-pipe may be` applied to lamps using any of the known oils, fluids, dac., for illuminating purposes, and to gasburners or jets. In the latter case it will best serve its purposes Where the dame is surrounded bya glass chimney, as in .the Argand burners, to which my lamp-pipe will be attached.

The draft of the flue or stovepipe, Whichever happens to be employed in connection with my lamp-pipe, serves to produce better draft in the lamp, and consequently it burns IOO better, gives better light, more perfect combustion of the oil or gas, and the odor, heat, and deleterious products ofcombustion are taken out of the room.

I am also aware thatvarious appendages have been applied to lamps for creating what may be termed a forced draft, and for preheating atmospheric air before it is fed to the flame; but I do not claim such as being my invention. In lamps of'such a character there is necesarily evolved a great degree of heat, while in my invention this is materially avoided, as the products of combustion and heat evolved are conducted directly to the outer atmosphere.

Anoth er advantage of my invention is that it is applicable to lamps of ordinary construction, does not require aburner of special con- 

